Remove references to archive.canonical.com, which is no longer used and should not be included in the default sources.list.

debian/changelog

@@ -1,3 +1,10 @@
+livecd-rootfs (2.752) UNRELEASED; urgency=medium
+
+  * Remove references to archive.canonical.com, which is no longer used and
+    should not be included in the default sources.list.  LP: #1959343.
+
+ -- Steve Langasek <steve.langasek@ubuntu.com>  Thu, 27 Jan 2022 14:26:22 -0800
+
 livecd-rootfs (2.751) jammy; urgency=medium
 
   * Revert patch for unmounting in local builds as it is causing autopkgtest

live-build/functions

@@ -898,13 +898,6 @@ deb $LB_PARENT_MIRROR_BINARY $LB_DISTRIBUTION-updates multiverse
 deb $LB_PARENT_MIRROR_BINARY $LB_DISTRIBUTION-backports main restricted universe multiverse
 # deb-src $LB_PARENT_MIRROR_BINARY $LB_DISTRIBUTION-backports main restricted universe multiverse
 
-## Uncomment the following two lines to add software from Canonical's
-## 'partner' repository.
-## This software is not part of Ubuntu, but is offered by Canonical and the
-## respective vendors as a service to Ubuntu users.
-# deb http://archive.canonical.com/ubuntu $LB_DISTRIBUTION partner
-# deb-src http://archive.canonical.com/ubuntu $LB_DISTRIBUTION partner
-
 deb $LB_PARENT_MIRROR_BINARY_SECURITY $LB_DISTRIBUTION-security main restricted
 # deb-src $LB_PARENT_MIRROR_BINARY_SECURITY $LB_DISTRIBUTION-security main restricted
 deb $LB_PARENT_MIRROR_BINARY_SECURITY $LB_DISTRIBUTION-security universe